[Home](./index.md) > [bitburner](./bitburner.md) > [HacknetServersFormulas](./bitburner.hacknetserversformulas.md) ## HacknetServersFormulas interface Hacknet Server formulas **Signature:** ```typescript interface HacknetServersFormulas ``` ## Methods

Method	Description
[cacheUpgradeCost(startingCache, extraCache)](./bitburner.hacknetserversformulas.cacheupgradecost.md)	Calculate cost of upgrading hacknet server cache.
[constants()](./bitburner.hacknetserversformulas.constants.md)	All constants used by the game.
[coreUpgradeCost(startingCore, extraCores, costMult)](./bitburner.hacknetserversformulas.coreupgradecost.md)	Calculate cost of upgrading hacknet server cores.
[hacknetServerCost(n, mult)](./bitburner.hacknetserversformulas.hacknetservercost.md)	Calculate the cost of a hacknet server.
[hashGainRate(level, ramUsed, maxRam, cores, mult)](./bitburner.hacknetserversformulas.hashgainrate.md)	Calculate hash gain rate.
[hashUpgradeCost(upgName, level)](./bitburner.hacknetserversformulas.hashupgradecost.md)	Calculate hash cost of an upgrade.
[levelUpgradeCost(startingLevel, extraLevels, costMult)](./bitburner.hacknetserversformulas.levelupgradecost.md)	Calculate cost of upgrading hacknet server level.
[ramUpgradeCost(startingRam, extraLevels, costMult)](./bitburner.hacknetserversformulas.ramupgradecost.md)	Calculate cost of upgrading hacknet server ram.